X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Fdaemon.h;h=fa896e17f044487c3e2b17f33ca9b78bc0044c5c;hb=b4c040d30e2677313a892ffe4cde0d53e446da7d;hp=b8a9001f2e1f8f91e3cdc0e264c6b6a721c40f7d;hpb=40ca9a57829f2e82362e391d7d998bf33c8bd671;p=libguestfs.git

diff --git a/daemon/daemon.h b/daemon/daemon.h
index b8a9001..fa896e1 100644
--- a/daemon/daemon.h
+++ b/daemon/daemon.h
@@ -25,17 +25,41 @@
 
 /* in guestfsd.c */
 extern void xwrite (int sock, const void *buf, size_t len);
+extern void xread (int sock, void *buf, size_t len);
+extern int command (char **stdoutput, char **stderror, const char *name, ...);
 
 /* in proto.c */
 extern int proc_nr;
 extern int serial;
 
+/* in mount.c */
+extern int root_mounted;
+
 /* in stubs.c (auto-generated) */
 extern void dispatch_incoming_message (XDR *);
 
 /* in proto.c */
 extern void main_loop (int sock);
 extern void reply_with_error (const char *fs, ...);
-extern void reply (xdrproc_t, XDR *);
+extern void reply_with_perror (const char *fs, ...);
+extern void reply (xdrproc_t xdrp, char *ret);
+
+#define NEED_ROOT							\
+  do {									\
+    if (!root_mounted) {						\
+      reply_with_error ("%s: you must call 'mount' first to mount the root filesystem", __func__); \
+      return -1;							\
+    }									\
+  }									\
+  while (0)
+
+/* NB:
+ * (1) You must match CHROOT_IN and CHROOT_OUT even along error paths.
+ * (2) You must not change directory!  cwd must always be "/", otherwise
+ *     we can't escape our own chroot.
+ * (3) All paths specified must be absolute.
+ */
+#define CHROOT_IN chroot ("/sysroot");
+#define CHROOT_OUT chroot (".");
 
 #endif /* GUESTFSD_DAEMON_H */